Safety belt wearing detection mechanism

The utility model discloses a safety belt wearing detection mechanism which comprises a detection box arranged on a vehicle-mounted safety belt, and relates to the technical field of safety belts. According to the safety belt wearing detection mechanism, the thin detection belt and the thick detection belt can be effectively extended and rolled along with stretching and retracting of the vehicle-mounted safety belt under the cooperation of the automatic rolling assembly, the thin detection belt and the thick detection belt are limited under the arrangement of the zipper wrapping part, the thin detection belt and the thick detection belt are prevented from being in direct contact with the body of a passenger, and the safety of the passenger is improved. The extension length of the vehicle-mounted safety belt is measured through the arrangement of the thin detection belt, when the thin detection belt passes through the space between the two detection plates, the two trigger buttons cannot be extruded at the sam